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authorEugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>2019-02-14 18:07:45 +0300
committerVineet Gupta <vgupta@synopsys.com>2019-02-21 11:03:19 -0800
commit493a2f812446e92bcb1e69a77381b4d39808d730 (patch)
tree81f0dcae81ba1431f584ded2934e88703efb01cb /arch/arc/kernel
parenta66f2e57bd566240d8b3884eedf503928fbbe557 (diff)
downloadlinux-493a2f812446e92bcb1e69a77381b4d39808d730.tar.bz2
ARC: enable uboot support unconditionally
After reworking U-boot args handling code and adding paranoid arguments check we can eliminate CONFIG_ARC_UBOOT_SUPPORT and enable uboot support unconditionally. For JTAG case we can assume that core registers will come up reset value of 0 or in worst case we rely on user passing '-on=clear_regs' to Metaware debugger. Cc: stable@vger.kernel.org Tested-by: Corentin LABBE <clabbe@baylibre.com> Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com> Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Diffstat (limited to 'arch/arc/kernel')
-rw-r--r--arch/arc/kernel/head.S2
-rw-r--r--arch/arc/kernel/setup.c2
2 files changed, 0 insertions, 4 deletions
diff --git a/arch/arc/kernel/head.S b/arch/arc/kernel/head.S
index 1f945d0f40da..30e090625916 100644
--- a/arch/arc/kernel/head.S
+++ b/arch/arc/kernel/head.S
@@ -100,7 +100,6 @@ ENTRY(stext)
st.ab 0, [r5, 4]
1:
-#ifdef CONFIG_ARC_UBOOT_SUPPORT
; Uboot - kernel ABI
; r0 = [0] No uboot interaction, [1] cmdline in r2, [2] DTB in r2
; r1 = magic number (always zero as of now)
@@ -108,7 +107,6 @@ ENTRY(stext)
; These are handled later in handle_uboot_args()
st r0, [@uboot_tag]
st r2, [@uboot_arg]
-#endif
; setup "current" tsk and optionally cache it in dedicated r25
mov r9, @init_task
diff --git a/arch/arc/kernel/setup.c b/arch/arc/kernel/setup.c
index 8bb156164556..93d4d6639873 100644
--- a/arch/arc/kernel/setup.c
+++ b/arch/arc/kernel/setup.c
@@ -487,7 +487,6 @@ void __init handle_uboot_args(void)
bool use_embedded_dtb = true;
bool append_cmdline = false;
-#ifdef CONFIG_ARC_UBOOT_SUPPORT
/* check that we know this tag */
if (uboot_tag != UBOOT_TAG_NONE &&
uboot_tag != UBOOT_TAG_CMDLINE &&
@@ -514,7 +513,6 @@ void __init handle_uboot_args(void)
append_cmdline = true;
ignore_uboot_args:
-#endif
if (use_embedded_dtb) {
machine_desc = setup_machine_fdt(__dtb_start);